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3 years ago

Epithelial cells in the skin work together to perform a specific function

Biology

1 answer:

Ilia_Sergeevich [38]3 years ago

7 0

Answer:

they act as barrier between inside and outside of body and protect the body from various viruses

Explanation:

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Which statement explains why the recombination frequency between two genes is always less than 50%?A) recombination cannot be mo

Vitek1552 [10]

Answer:

Option (D).

Explanation:

Recombination frequency nay be defined as the the frequency of crossover of a single chromosome during meiosis. The maxiumum recombination frequency is 50%.

Genes that has recombination frequency nearly equal to 50% are considered as unlinked genes. Unlinked genes cannot undergo the recombination process and may have equal chances to inherit together or can inherit separately in the next generation.

Thus, the correct answer is option (D).

8 0

3 years ago

14). During the early 1700’s, a small group of pacifist Protestants fled Germany to avoid religious persecution. This group, the

abruzzese [7]

A) In the Dunker population, the frequency of IB allele is 0.3 and the frequency of i allele is 0.4. In the general population, the frequency of IB allele is 0.1 and the frequency of i allele is 0.5.

If:
$I^{A}$ - the frequency of IA allele
 $I^{B}$ - the frequency of IB allele
 $i$ - the frequency of i allele

Then:
 $I^{A} I^{A}$ + $I^{A} i$ - the frequency of individuals with A blood type
 $I^{B} I^{B}$ + $I^{B} i$ - the frequency of individuals with B blood type
 $ii$ - the frequency of individuals with O blood type

Let's first take a look on the Dunker population:
$I^{A} = 0.3$
$ii=0.16
$

Since there is only one possible genotype for O individuals - ii - the frequency of the allele i is square root of the frequency of O individuals:
 $i= \sqrt{ii}$
⇒ $i = \sqrt{0.16}$
⇒ $i=0.4$

Now, we have the frequencies of two alleles ( $I^{A}$ and $i$ ). To calculate the frequency of $I^{B}$ allele, we will use the formula:
 $I^{A} + I^{B} + i = 1$
⇒ $I^{B} = 1- I^{A} - i$
⇒ $I^{B} = 1-0.3-0.4$
⇒ $I^{B} = 0.3$

Now, in the general population:
$I^{A} = 0.4$
$ii=0.25$

Similarly to the work for the Dunker population:
 $i= \sqrt{ii}$
⇒ $i = \sqrt{0.25}$
⇒ $i=0.5$

$I^{A} + I^{B} + i = 1$
⇒ $I^{B} = 1- I^{A} - i$
⇒ $I^{B} = 1-0.4-0.5$
⇒ $I^{B} = 0.1$


b) A founder effect is a result of geographical separation of a few individuals from the original population. Those founding individuals will form a new population. The Dunker population was not only geographically separated, but also genetically. The group interbreeding was present resulting in increasing those allele frequencies that were the most common in the founding population. In this case, the most individuals from the founding population had B blood type.

6 0

3 years ago

Use the following words in a sentence (seperatley please)- volume, and meniscus.

QveST [7]

Volume - the amount of something in a three-dimensional area.
Meniscus - the curve that a liquid makes at the surface from surface tension.

I measured the volume of water in the container.

The water formed a meniscus near the top of the container.

4 0

3 years ago

Some orchids produce two types of flowers, one with only anthers and the other with only carpels. And on some orchids like this,

aliina [53]

Answer:

The Orchids is the diversified structures of flowers, in fact, they have unique feature. Even with the pollination, they have several mechanisms of pollination. Few of them include:

1. Few orchids have self-fertilization where the anther converts from solid-state to a liquid state without any aid of an external pollinating agent.

2. In others, self-pollination occurs, when the caudicles dry the pollen fall on the stigma.

3. This happens through an external pollinator resulting in a diversity of species.

4. This is a very special case where the flower attracts the insect to mate with bright petals, odor, and the shape.

5. These types depend on ants and other insects to get pollinated.

6. Here, the pollens release some kind of force, when an insect gets in contact with anther which results in getting away the agent from the flower.

4 0

2 years ago

Which of the following was an effect of World War II on the agriculture industry?

vladimir1956 [14]

I would guess C, hope that helps!

6 0

3 years ago

Read 2 more answers